Asteroids Near Earth

Asteroid 99935 2002 AV4

99935 2002 AV4 asteroid magnitude is 15.9 H and asteroid diameter is between 1,756 and 3,927 meters. Asteroid 99935 2002 AV4 closest near miss earth distance is 11,144,411 kilometers on 15 July 1918.

Magnitude15.9 H
Diameter min.1756.12 meters
Diameter max.3926.81 meters
EquinoxJ2000
Orbit Uncertainty0 U
Orbital Period777.26 days
Min. Orbit Intersection.167786
Mean Anomaly319.244732
Mean Motion0.463166
Semi-major Axis1.654416 au
Eccentricity0.644761
Is Hazardous?No
Jupiter Tisserand invariant3.986
Inclination12.768977 deg
Ascending Node Longitude16.373154 deg
Perihelion Distance0.587714 au
Perihelion Argument322.960978 deg
Perihelion Time2458288.49273 JED
Aphelion Distance2.721118 au
Orbit Determination Date28 January 2018
Epoch Osculation Date2458200.5

List of Asteroid 99935 2002 AV4 Close Approaches to Earth

List of approaches near Earth of asteroid 99935 2002 AV4 with distance and velocity information.

24 March 2197

Distance12,473,632 km
Distance (miles)7,750,756 mi
Lunar Distance32.435238 LD
Astronomical Distance0.083381 AU
Velocity (km per hour)68,275 km/h
Velocity (meters per second)18,965 m/s
Orbiting BodyVenus

28 November 2190

Distance27,011,826 km
Distance (miles)16,784,371 mi
Lunar Distance70.238968 LD
Astronomical Distance0.180563 AU
Velocity (km per hour)70,427 km/h
Velocity (meters per second)19,563 m/s
Orbiting BodyEarth

27 August 2188

Distance65,299,068 km
Distance (miles)40,574,960 mi
Lunar Distance169.797455 LD
Astronomical Distance0.436497 AU
Velocity (km per hour)76,828 km/h
Velocity (meters per second)21,341 m/s
Orbiting BodyEarth

24 May 2186

Distance27,566,414 km
Distance (miles)17,128,976 mi
Lunar Distance71.681068 LD
Astronomical Distance0.18427 AU
Velocity (km per hour)78,207 km/h
Velocity (meters per second)21,724 m/s
Orbiting BodyEarth

19 December 2177

Distance21,971,156 km
Distance (miles)13,652,243 mi
Lunar Distance57.131695 LD
Astronomical Distance0.146868 AU
Velocity (km per hour)68,260 km/h
Velocity (meters per second)18,961 m/s
Orbiting BodyVenus

18 November 2173

Distance32,428,422 km
Distance (miles)20,150,087 mi
Lunar Distance84.323769 LD
Astronomical Distance0.216771 AU
Velocity (km per hour)61,841 km/h
Velocity (meters per second)17,178 m/s
Orbiting BodyEarth

19 October 2173

Distance18,004,206 km
Distance (miles)11,187,295 mi
Lunar Distance46.816414 LD
Astronomical Distance0.120351 AU
Velocity (km per hour)60,121 km/h
Velocity (meters per second)16,700 m/s
Orbiting BodyVenus

16 August 2171

Distance65,044,684 km
Distance (miles)40,416,893 mi
Lunar Distance169.135971 LD
Astronomical Distance0.434797 AU
Velocity (km per hour)73,656 km/h
Velocity (meters per second)20,460 m/s
Orbiting BodyEarth

18 May 2169

Distance36,421,276 km
Distance (miles)22,631,132 mi
Lunar Distance94.706406 LD
Astronomical Distance0.243461 AU
Velocity (km per hour)90,645 km/h
Velocity (meters per second)25,179 m/s
Orbiting BodyEarth

31 October 2156

Distance43,648,792 km
Distance (miles)27,122,102 mi
Lunar Distance113.500145 LD
Astronomical Distance0.291774 AU
Velocity (km per hour)59,647 km/h
Velocity (meters per second)16,569 m/s
Orbiting BodyEarth

31 July 2154

Distance62,559,676 km
Distance (miles)38,872,780 mi
Lunar Distance162.674194 LD
Astronomical Distance0.418186 AU
Velocity (km per hour)65,997 km/h
Velocity (meters per second)18,332 m/s
Orbiting BodyEarth

11 May 2152

Distance51,296,348 km
Distance (miles)31,874,073 mi
Lunar Distance133.386124 LD
Astronomical Distance0.342895 AU
Velocity (km per hour)104,016 km/h
Velocity (meters per second)28,893 m/s
Orbiting BodyEarth

3 March 2146

Distance12,547,522 km
Distance (miles)7,796,669 mi
Lunar Distance32.627377 LD
Astronomical Distance0.083875 AU
Velocity (km per hour)69,460 km/h
Velocity (meters per second)19,295 m/s
Orbiting BodyVenus

21 December 2141

Distance63,134,576 km
Distance (miles)39,230,007 mi
Lunar Distance164.169113 LD
Astronomical Distance0.422029 AU
Velocity (km per hour)114,227 km/h
Velocity (meters per second)31,730 m/s
Orbiting BodyEarth

13 October 2139

Distance53,366,984 km
Distance (miles)33,160,706 mi
Lunar Distance138.770401 LD
Astronomical Distance0.356736 AU
Velocity (km per hour)66,904 km/h
Velocity (meters per second)18,584 m/s
Orbiting BodyEarth

9 July 2137

Distance55,931,640 km
Distance (miles)34,754,310 mi
Lunar Distance145.439285 LD
Astronomical Distance0.37388 AU
Velocity (km per hour)52,688 km/h
Velocity (meters per second)14,636 m/s
Orbiting BodyEarth

6 May 2135

Distance67,928,032 km
Distance (miles)42,208,522 mi
Lunar Distance176.63356 LD
Astronomical Distance0.454071 AU
Velocity (km per hour)117,617 km/h
Velocity (meters per second)32,671 m/s
Orbiting BodyEarth

15 December 2124

Distance47,403,040 km
Distance (miles)29,454,883 mi
Lunar Distance123.262329 LD
Astronomical Distance0.31687 AU
Velocity (km per hour)101,083 km/h
Velocity (meters per second)28,079 m/s
Orbiting BodyEarth

27 September 2122

Distance59,413,956 km
Distance (miles)36,918,121 mi
Lunar Distance154.49437 LD
Astronomical Distance0.397158 AU
Velocity (km per hour)73,142 km/h
Velocity (meters per second)20,317 m/s
Orbiting BodyEarth

23 September 2122

Distance19,538,328 km
Distance (miles)12,140,554 mi
Lunar Distance50.805599 LD
Astronomical Distance0.130606 AU
Velocity (km per hour)60,537 km/h
Velocity (meters per second)16,816 m/s
Orbiting BodyVenus

9 June 2120

Distance42,505,664 km
Distance (miles)26,411,795 mi
Lunar Distance110.527664 LD
Astronomical Distance0.284133 AU
Velocity (km per hour)49,054 km/h
Velocity (meters per second)13,626 m/s
Orbiting BodyEarth

8 December 2107

Distance32,827,774 km
Distance (miles)20,398,233 mi
Lunar Distance85.362206 LD
Astronomical Distance0.21944 AU
Velocity (km per hour)86,891 km/h
Velocity (meters per second)24,136 m/s
Orbiting BodyEarth

13 September 2105

Distance63,223,672 km
Distance (miles)39,285,368 mi
Lunar Distance164.400787 LD
Astronomical Distance0.422624 AU
Velocity (km per hour)76,685 km/h
Velocity (meters per second)21,301 m/s
Orbiting BodyEarth

31 May 2103

Distance30,221,252 km
Distance (miles)18,778,615 mi
Lunar Distance78.584457 LD
Astronomical Distance0.202017 AU
Velocity (km per hour)61,904 km/h
Velocity (meters per second)17,196 m/s
Orbiting BodyEarth

8 February 2095

Distance12,480,223 km
Distance (miles)7,754,851 mi
Lunar Distance32.452377 LD
Astronomical Distance0.083425 AU
Velocity (km per hour)70,126 km/h
Velocity (meters per second)19,479 m/s
Orbiting BodyVenus

30 November 2090

Distance26,291,898 km
Distance (miles)16,337,028 mi
Lunar Distance68.366936 LD
Astronomical Distance0.17575 AU
Velocity (km per hour)75,478 km/h
Velocity (meters per second)20,966 m/s
Orbiting BodyEarth

31 August 2088

Distance64,953,720 km
Distance (miles)40,360,370 mi
Lunar Distance168.899429 LD
Astronomical Distance0.434189 AU
Velocity (km per hour)77,267 km/h
Velocity (meters per second)21,463 m/s
Orbiting BodyEarth

24 May 2086

Distance25,604,298 km
Distance (miles)15,909,773 mi
Lunar Distance66.578964 LD
Astronomical Distance0.171154 AU
Velocity (km per hour)72,680 km/h
Velocity (meters per second)20,189 m/s
Orbiting BodyEarth

6 November 2075

Distance21,201,246 km
Distance (miles)13,173,843 mi
Lunar Distance55.129692 LD
Astronomical Distance0.141722 AU
Velocity (km per hour)63,385 km/h
Velocity (meters per second)17,607 m/s
Orbiting BodyVenus

23 November 2073

Distance27,530,230 km
Distance (miles)17,106,492 mi
Lunar Distance71.586975 LD
Astronomical Distance0.184028 AU
Velocity (km per hour)67,081 km/h
Velocity (meters per second)18,634 m/s
Orbiting BodyEarth

9 September 2071

Distance15,992,505 km
Distance (miles)9,937,282 mi
Lunar Distance41.585381 LD
Astronomical Distance0.106903 AU
Velocity (km per hour)59,922 km/h
Velocity (meters per second)16,645 m/s
Orbiting BodyVenus

22 August 2071

Distance65,508,832 km
Distance (miles)40,705,301 mi
Lunar Distance170.342911 LD
Astronomical Distance0.4379 AU
Velocity (km per hour)75,874 km/h
Velocity (meters per second)21,076 m/s
Orbiting BodyEarth

20 May 2069

Distance28,714,190 km
Distance (miles)17,842,170 mi
Lunar Distance74.665634 LD
Astronomical Distance0.191943 AU
Velocity (km per hour)82,239 km/h
Velocity (meters per second)22,844 m/s
Orbiting BodyEarth

11 November 2056

Distance35,758,804 km
Distance (miles)22,219,491 mi
Lunar Distance92.983772 LD
Astronomical Distance0.239033 AU
Velocity (km per hour)59,409 km/h
Velocity (meters per second)16,503 m/s
Orbiting BodyEarth

9 August 2054

Distance64,710,660 km
Distance (miles)40,209,340 mi
Lunar Distance168.26741 LD
Astronomical Distance0.432564 AU
Velocity (km per hour)71,559 km/h
Velocity (meters per second)19,877 m/s
Orbiting BodyEarth

14 May 2052

Distance39,084,288 km
Distance (miles)24,285,851 mi
Lunar Distance101.631042 LD
Astronomical Distance0.261262 AU
Velocity (km per hour)93,882 km/h
Velocity (meters per second)26,078 m/s
Orbiting BodyEarth

21 January 2044

Distance16,280,581 km
Distance (miles)10,116,284 mi
Lunar Distance42.334465 LD
Astronomical Distance0.108829 AU
Velocity (km per hour)78,248 km/h
Velocity (meters per second)21,736 m/s
Orbiting BodyVenus

24 October 2039

Distance47,095,732 km
Distance (miles)29,263,931 mi
Lunar Distance122.463242 LD
Astronomical Distance0.314816 AU
Velocity (km per hour)61,265 km/h
Velocity (meters per second)17,018 m/s
Orbiting BodyEarth

23 July 2037

Distance61,075,080 km
Distance (miles)37,950,295 mi
Lunar Distance158.813797 LD
Astronomical Distance0.408262 AU
Velocity (km per hour)62,287 km/h
Velocity (meters per second)17,302 m/s
Orbiting BodyEarth

8 May 2035

Distance55,086,800 km
Distance (miles)34,229,351 mi
Lunar Distance143.242447 LD
Astronomical Distance0.368233 AU
Velocity (km per hour)107,657 km/h
Velocity (meters per second)29,905 m/s
Orbiting BodyEarth

18 December 2024

Distance59,804,792 km
Distance (miles)37,160,975 mi
Lunar Distance155.510666 LD
Astronomical Distance0.39977 AU
Velocity (km per hour)111,897 km/h
Velocity (meters per second)31,082 m/s
Orbiting BodyEarth

15 October 2024

Distance21,082,128 km
Distance (miles)13,099,827 mi
Lunar Distance54.81995 LD
Astronomical Distance0.140925 AU
Velocity (km per hour)61,913 km/h
Velocity (meters per second)17,198 m/s
Orbiting BodyVenus

8 October 2022

Distance54,667,176 km
Distance (miles)33,968,608 mi
Lunar Distance142.151291 LD
Astronomical Distance0.365427 AU
Velocity (km per hour)67,914 km/h
Velocity (meters per second)18,865 m/s
Orbiting BodyEarth

18 August 2020

Distance15,689,861 km
Distance (miles)9,749,228 mi
Lunar Distance40.798416 LD
Astronomical Distance0.10488 AU
Velocity (km per hour)59,952 km/h
Velocity (meters per second)16,653 m/s
Orbiting BodyVenus

2 July 2020

Distance53,982,176 km
Distance (miles)33,542,969 mi
Lunar Distance140.370087 LD
Astronomical Distance0.360849 AU
Velocity (km per hour)49,458 km/h
Velocity (meters per second)13,738 m/s
Orbiting BodyEarth

2 May 2018

Distance71,300,496 km
Distance (miles)44,304,074 mi
Lunar Distance185.403 LD
Astronomical Distance0.476614 AU
Velocity (km per hour)120,594 km/h
Velocity (meters per second)33,498 m/s
Orbiting BodyEarth

12 December 2007

Distance43,057,340 km
Distance (miles)26,754,591 mi
Lunar Distance111.962196 LD
Astronomical Distance0.287821 AU
Velocity (km per hour)97,782 km/h
Velocity (meters per second)27,162 m/s
Orbiting BodyEarth

22 September 2005

Distance60,328,932 km
Distance (miles)37,486,660 mi
Lunar Distance156.873581 LD
Astronomical Distance0.403274 AU
Velocity (km per hour)73,801 km/h
Velocity (meters per second)20,500 m/s
Orbiting BodyEarth

5 June 2003

Distance39,630,644 km
Distance (miles)24,625,341 mi
Lunar Distance103.051735 LD
Astronomical Distance0.264914 AU
Velocity (km per hour)51,401 km/h
Velocity (meters per second)14,278 m/s
Orbiting BodyEarth

29 December 1992

Distance16,684,209 km
Distance (miles)10,367,087 mi
Lunar Distance43.384022 LD
Astronomical Distance0.111527 AU
Velocity (km per hour)79,246 km/h
Velocity (meters per second)22,013 m/s
Orbiting BodyVenus

4 December 1990

Distance29,827,278 km
Distance (miles)18,533,811 mi
Lunar Distance77.559998 LD
Astronomical Distance0.199383 AU
Velocity (km per hour)84,133 km/h
Velocity (meters per second)23,370 m/s
Orbiting BodyEarth

9 September 1988

Distance63,812,412 km
Distance (miles)39,651,195 mi
Lunar Distance165.931702 LD
Astronomical Distance0.42656 AU
Velocity (km per hour)76,755 km/h
Velocity (meters per second)21,321 m/s
Orbiting BodyEarth

28 May 1986

Distance28,215,874 km
Distance (miles)17,532,531 mi
Lunar Distance73.369858 LD
Astronomical Distance0.188611 AU
Velocity (km per hour)63,696 km/h
Velocity (meters per second)17,693 m/s
Orbiting BodyEarth

29 November 1973

Distance25,537,892 km
Distance (miles)15,868,510 mi
Lunar Distance66.406296 LD
Astronomical Distance0.17071 AU
Velocity (km per hour)75,694 km/h
Velocity (meters per second)21,026 m/s
Orbiting BodyEarth

28 September 1973

Distance21,602,640 km
Distance (miles)13,423,258 mi
Lunar Distance56.173439 LD
Astronomical Distance0.144405 AU
Velocity (km per hour)58,448 km/h
Velocity (meters per second)16,236 m/s
Orbiting BodyVenus

31 August 1971

Distance65,161,144 km
Distance (miles)40,489,258 mi
Lunar Distance169.438812 LD
Astronomical Distance0.435575 AU
Velocity (km per hour)77,135 km/h
Velocity (meters per second)21,426 m/s
Orbiting BodyEarth

2 August 1969

Distance12,388,486 km
Distance (miles)7,697,848 mi
Lunar Distance32.213833 LD
Astronomical Distance0.082812 AU
Velocity (km per hour)62,625 km/h
Velocity (meters per second)17,396 m/s
Orbiting BodyVenus

23 May 1969

Distance24,729,134 km
Distance (miles)15,365,971 mi
Lunar Distance64.303276 LD
Astronomical Distance0.165304 AU
Velocity (km per hour)72,148 km/h
Velocity (meters per second)20,041 m/s
Orbiting BodyEarth

22 November 1956

Distance26,936,544 km
Distance (miles)16,737,592 mi
Lunar Distance70.043213 LD
Astronomical Distance0.18006 AU
Velocity (km per hour)67,176 km/h
Velocity (meters per second)18,660 m/s
Orbiting BodyEarth

21 August 1954

Distance65,678,376 km
Distance (miles)40,810,651 mi
Lunar Distance170.783768 LD
Astronomical Distance0.439033 AU
Velocity (km per hour)75,756 km/h
Velocity (meters per second)21,043 m/s
Orbiting BodyEarth

19 May 1952

Distance27,357,414 km
Distance (miles)16,999,109 mi
Lunar Distance71.137604 LD
Astronomical Distance0.182873 AU
Velocity (km per hour)81,602 km/h
Velocity (meters per second)22,667 m/s
Orbiting BodyEarth

27 February 1946

Distance20,394,890 km
Distance (miles)12,672,797 mi
Lunar Distance53.032925 LD
Astronomical Distance0.136331 AU
Velocity (km per hour)60,308 km/h
Velocity (meters per second)16,752 m/s
Orbiting BodyVenus

11 November 1939

Distance35,706,572 km
Distance (miles)22,187,035 mi
Lunar Distance92.847961 LD
Astronomical Distance0.238684 AU
Velocity (km per hour)59,062 km/h
Velocity (meters per second)16,406 m/s
Orbiting BodyEarth

7 August 1937

Distance64,861,908 km
Distance (miles)40,303,321 mi
Lunar Distance168.660706 LD
Astronomical Distance0.433575 AU
Velocity (km per hour)71,261 km/h
Velocity (meters per second)19,795 m/s
Orbiting BodyEarth

13 May 1935

Distance38,761,912 km
Distance (miles)24,085,535 mi
Lunar Distance100.79277 LD
Astronomical Distance0.259107 AU
Velocity (km per hour)94,225 km/h
Velocity (meters per second)26,174 m/s
Orbiting BodyEarth

24 October 1922

Distance46,466,548 km
Distance (miles)28,872,974 mi
Lunar Distance120.827171 LD
Astronomical Distance0.31061 AU
Velocity (km per hour)60,542 km/h
Velocity (meters per second)16,817 m/s
Orbiting BodyEarth

21 July 1920

Distance61,282,792 km
Distance (miles)38,079,362 mi
Lunar Distance159.353912 LD
Astronomical Distance0.40965 AU
Velocity (km per hour)62,227 km/h
Velocity (meters per second)17,285 m/s
Orbiting BodyEarth

15 July 1918

Distance11,144,411 km
Distance (miles)6,924,816 mi
Lunar Distance28.978861 LD
Astronomical Distance0.074496 AU
Velocity (km per hour)65,837 km/h
Velocity (meters per second)18,288 m/s
Orbiting BodyVenus

7 May 1918

Distance55,247,056 km
Distance (miles)34,328,929 mi
Lunar Distance143.659164 LD
Astronomical Distance0.369304 AU
Velocity (km per hour)108,286 km/h
Velocity (meters per second)30,079 m/s
Orbiting BodyEarth

17 December 1907

Distance57,651,568 km
Distance (miles)35,823,024 mi
Lunar Distance149.911621 LD
Astronomical Distance0.385377 AU
Velocity (km per hour)110,633 km/h
Velocity (meters per second)30,731 m/s
Orbiting BodyEarth

6 October 1905

Distance55,100,176 km
Distance (miles)34,237,662 mi
Lunar Distance143.277222 LD
Astronomical Distance0.368322 AU
Velocity (km per hour)67,976 km/h
Velocity (meters per second)18,882 m/s
Orbiting BodyEarth

30 June 1903

Distance53,419,468 km
Distance (miles)33,193,319 mi
Lunar Distance138.906876 LD
Astronomical Distance0.357087 AU
Velocity (km per hour)48,454 km/h
Velocity (meters per second)13,459 m/s
Orbiting BodyEarth

1 May 1901

Distance71,464,904 km
Distance (miles)44,406,233 mi
Lunar Distance185.830505 LD
Astronomical Distance0.477713 AU
Velocity (km per hour)121,096 km/h
Velocity (meters per second)33,638 m/s
Orbiting BodyEarth

Asteroid 99935 2002 AV4 Velocity Distance Comparison

Asteroid Pass DateVelocityDistance
24 March 219768,275 km/h12,473,632 km
28 November 219070,427 km/h27,011,826 km
27 August 218876,828 km/h65,299,068 km
24 May 218678,207 km/h27,566,414 km
19 December 217768,260 km/h21,971,156 km
18 November 217361,841 km/h32,428,422 km
19 October 217360,121 km/h18,004,206 km
16 August 217173,656 km/h65,044,684 km
18 May 216990,645 km/h36,421,276 km
31 October 215659,647 km/h43,648,792 km
31 July 215465,997 km/h62,559,676 km
11 May 2152104,016 km/h51,296,348 km
3 March 214669,460 km/h12,547,522 km
21 December 2141114,227 km/h63,134,576 km
13 October 213966,904 km/h53,366,984 km
9 July 213752,688 km/h55,931,640 km
6 May 2135117,617 km/h67,928,032 km
15 December 2124101,083 km/h47,403,040 km
27 September 212273,142 km/h59,413,956 km
23 September 212260,537 km/h19,538,328 km
9 June 212049,054 km/h42,505,664 km
8 December 210786,891 km/h32,827,774 km
13 September 210576,685 km/h63,223,672 km
31 May 210361,904 km/h30,221,252 km
8 February 209570,126 km/h12,480,223 km
30 November 209075,478 km/h26,291,898 km
31 August 208877,267 km/h64,953,720 km
24 May 208672,680 km/h25,604,298 km
6 November 207563,385 km/h21,201,246 km
23 November 207367,081 km/h27,530,230 km
9 September 207159,922 km/h15,992,505 km
22 August 207175,874 km/h65,508,832 km
20 May 206982,239 km/h28,714,190 km
11 November 205659,409 km/h35,758,804 km
9 August 205471,559 km/h64,710,660 km
14 May 205293,882 km/h39,084,288 km
21 January 204478,248 km/h16,280,581 km
24 October 203961,265 km/h47,095,732 km
23 July 203762,287 km/h61,075,080 km
8 May 2035107,657 km/h55,086,800 km
18 December 2024111,897 km/h59,804,792 km
15 October 202461,913 km/h21,082,128 km
8 October 202267,914 km/h54,667,176 km
18 August 202059,952 km/h15,689,861 km
2 July 202049,458 km/h53,982,176 km
2 May 2018120,594 km/h71,300,496 km
12 December 200797,782 km/h43,057,340 km
22 September 200573,801 km/h60,328,932 km
5 June 200351,401 km/h39,630,644 km
29 December 199279,246 km/h16,684,209 km
4 December 199084,133 km/h29,827,278 km
9 September 198876,755 km/h63,812,412 km
28 May 198663,696 km/h28,215,874 km
29 November 197375,694 km/h25,537,892 km
28 September 197358,448 km/h21,602,640 km
31 August 197177,135 km/h65,161,144 km
2 August 196962,625 km/h12,388,486 km
23 May 196972,148 km/h24,729,134 km
22 November 195667,176 km/h26,936,544 km
21 August 195475,756 km/h65,678,376 km
19 May 195281,602 km/h27,357,414 km
27 February 194660,308 km/h20,394,890 km
11 November 193959,062 km/h35,706,572 km
7 August 193771,261 km/h64,861,908 km
13 May 193594,225 km/h38,761,912 km
24 October 192260,542 km/h46,466,548 km
21 July 192062,227 km/h61,282,792 km
15 July 191865,837 km/h11,144,411 km
7 May 1918108,286 km/h55,247,056 km
17 December 1907110,633 km/h57,651,568 km
6 October 190567,976 km/h55,100,176 km
30 June 190348,454 km/h53,419,468 km
1 May 1901121,096 km/h71,464,904 km